.taboutter{
	margin:0 auto;
	padding:0;
	width: 800px;
	border:1px solid #ccc;
}
ul{
	margin:0px;
	padding:0px;
	list-style:none;
	width:100px;
	height:45px;
	line-height: 45px;
}
ul li{
	display: inline-block;
	width:25%;
	text-align: center;
	margin:0;
	padding: 0;
	float:left;
	background-color:#ccc;
}

ul li:hover{
	background-color: #fff;
}
.tab{
	margin-top: 0px;
	border-top:1px solid #ccc;
}